Lev21:17-20

17 "Speak to Aaron, saying, None of your offspring throughout their generations who has a blemish may approach to offer the bread of his God. 18 For no one who has a blemish shall draw near, a man blind or lame, or one who has a mutilated face or a limb too long, 19 or a man who has an injured foot or an injured hand, 20 or a hunchback or a dwarf or a man with a defect in his sight or an itching disease or scabs or crushed testicles.